Manager/Secretary Working in Outlook 2010
Manager / Secretary Working Introduction
You can use Sharing Folders (as discussed elsewhere) to allow others to see your calendar or any of the folders named Calendar, Contacts, Tasks, Notes, or Journal.
Below MUST be done by the person wanting to delegate access (the Manager in a Manager/PA scenario)
If you wish to delegate access to another person, the simplest way is to submit a request for IT Services to set Full Mailbox Access and Send As permissions for another person. Please tell us exactly to whom you wish to delegate this permission:
For further information on accessing another persons mailbox can be found at https://support.office.com/en-us/article/Access-another-person-s-mailbox-A909AD30-E413-40B5-A487-0EA70B763081
If you wish to delegate on a more granular basis you can do this yourself through Outlook: https://support.office.com/en-us/article/Allow-someone-else-to-manage-your-mail-and-calendar-9684b670-7588-4eea-8717-9e5799047540